Will AT&T Force Me To Upgrade My Data Plan?

If you have an existing plan (such as the $15 200MB or $25 2GB plan from 2010 or the $30 Unlimited plan from 2007), YOU CAN KEEP IT due to “grandfather clause” in your carrier contract.

At the time of getting a new iPhone, you can choose the latest available plan or your existing plan. I’ve had unlimited plan transferred from iPhone 3GS to iPhone 4 and iPhone 4S with zero problems at the Apple Store.